Ron and Jim,
Jim ... I bought three of the AEU4002 'Vacuum Motors' from RN to add to my spares. They control-open-close the air vents in the interior, they open-close the fresh air - re-circulating air damper, and I believe the damper at the exterior air intake.
Ron ... I would be interested in buying everything, if everything included the list of items in my post. The catch is that I have a very low budget for these items as I am spreading out my 110 allowance money over several projects. Give me an general idea of what everything includes (e.g. heat-air-defrost control unit in dash?, compressor?).